CN111024990B

CN111024990B - Battery membrane electrode testing device

Info

Publication number: CN111024990B
Application number: CN201911136481.8A
Authority: CN
Inventors: 崔新然; 米新艳; 张克金; 曹婷婷; 李军泽
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2022-05-17
Anticipated expiration: 2039-11-19
Also published as: CN111024990A

Abstract

The invention belongs to the technical field of fuel cells, and discloses a cell membrane electrode testing device. The device for testing the battery membrane electrode comprises an upper clamp and a lower clamp, wherein the upper clamp is positioned above the lower clamp and is opposite to the lower clamp, and the upper clamp and the lower clamp are used for accommodating the battery membrane electrode to be tested; the positioning mechanisms are respectively abutted against two sides of the upper clamp and two sides of the lower clamp; a first locking assembly configured to secure the upper clamp and the lower clamp in a first direction; and the second locking assembly is positioned below the lower clamp, the second locking assembly is respectively penetrated and arranged on the positioning mechanism along the second direction, and the first direction and the second direction are perpendicular to each other. The cell membrane electrode testing device realizes the fixation in two freedom degree directions of space, and the upper clamp and the lower clamp can not generate micro dislocation in the locking process of the first locking assembly and the second locking assembly, so that the cell membrane electrode to be tested is more stable and flat in the clamping process.

Description

Battery membrane electrode testing device

Technical Field

The invention relates to the technical field of fuel cells, in particular to a cell membrane electrode testing device.

Background

The membrane electrode of the fuel cell is one of the key components of the proton exchange membrane fuel cell, which needs to be accompanied with a great amount of experimental tests in the product development process, and therefore, higher requirements are put on the firmness and reliability of the test fixture.

Therefore, the problems brought by the test fixture are improved as much as possible by developing and designing the fixture and the assembling method. The quick clamping device of current battery test adopts the mode of compressing tightly of rotatory pressure disk to replace artifical locking bolt, utilizes insulating locating lever to fix a position the fuel cell assembly, nevertheless when the pressure disk compresses tightly anchor clamps gradually, along with the rotation of pressure disk, can drive the subassembly of first anchor clamps and second anchor clamps and take place the dislocation and remove, and the displacement can receive the influence of locating lever, still can cause the level and smooth and sealed problem of inside membrane electrode. In addition, the conventional fixture generally adopts a heating rod for controlling the temperature, the heating is very uneven, the heating is only carried out, and the heat cannot be taken away, and because the polar plate of the membrane electrode test fixture needs to be repeatedly used, the membrane electrode test fixture is thicker, and the ideal temperature control effect cannot be realized.

Disclosure of Invention

The invention aims to provide a cell membrane electrode testing device, which reduces the situation of dislocation movement and ensures the accuracy and stability of positioning.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cell membrane electrode test device comprising:

the device comprises an upper clamp and a lower clamp, wherein the upper clamp is positioned above the lower clamp and is opposite to the lower clamp, and a membrane electrode of a battery to be tested is accommodated between the upper clamp and the lower clamp;

the positioning mechanisms are respectively abutted against two sides of the upper clamp and two sides of the lower clamp;

a first locking assembly configured to secure the upper clamp and the lower clamp in a first direction;

and the second locking assemblies are positioned below the lower clamp, the second locking assemblies respectively penetrate through the positioning mechanism along a second direction, and the first direction and the second direction are perpendicular to each other.

Preferably, the positioning mechanism includes two positioning assemblies disposed opposite to each other, and the two positioning assemblies are disposed at diagonal positions of the upper clamp, respectively.

Preferably, each positioning assembly comprises a bottom plate and a stand column which are arranged perpendicular to each other, and the stand columns can abut against the upper clamp and the lower clamp respectively.

Preferably, a boss is convexly arranged on the inner side of the upright post and used for bearing the lower clamp.

Preferably, the upper clamp comprises an upper pressure plate, an upper insulating gasket, an upper current collecting plate and an upper polar plate which are sequentially overlapped from top to bottom, and the upper polar plate abuts against one side of the membrane electrode of the battery to be tested.

Preferably, the lower clamp comprises a lower pressing plate, a lower insulating gasket, a lower current collecting plate and a lower polar plate which are sequentially overlapped from bottom to top, and the lower polar plate is abutted to the other side of the membrane electrode of the battery to be tested.

Preferably, the upper polar plate and the lower polar plate are both provided with cooling water channels, and the sides of the upper polar plate and the lower polar plate close to each other are both provided with sealing rings.

Preferably, gas flow channels are arranged on the upper electrode plate and the lower electrode plate on the sides facing the membrane electrode of the battery to be tested, wherein one of the gas flow channels is used for introducing hydrogen, and the other gas flow channel is used for introducing air.

Preferably, notches are provided at diagonal positions of the upper jig and the lower jig, and the notches abut against and are slidable relative to the side walls of the column.

Preferably, the second locking component comprises a screw rod and a nut, the screw rod penetrates through the positioning mechanism, and the nut is sleeved on the screw rod and abuts against the positioning mechanism.

The invention has the beneficial effects that:

according to the cell membrane electrode testing device provided by the invention, the upper clamp and the lower clamp are folded to enable the cell membrane electrode to be tested to be clamped in the upper clamp, and the first locking component and the positioning mechanism are arranged, so that the upper clamp and the lower clamp are fixed along the first direction by utilizing the first locking component after the positioning mechanism is respectively abutted against the two sides of the upper clamp and the two sides of the lower clamp, and the limiting and fixing of the cell membrane electrode to be tested in the first direction are realized. Meanwhile, the second locking assemblies are arranged to penetrate through the positioning mechanism along the second direction respectively, and under the combined action of the positioning mechanism and the second locking assemblies, the limiting and fixing of the battery membrane electrode to be detected in the second direction are achieved. Because first direction and second direction mutually perpendicular set up, compare with prior art, realize the fixed of two degree of freedom directions in space, at first locking Assembly and second locking Assembly's locking in-process, go up anchor clamps and can not take place small dislocation with lower anchor clamps, make the battery membrane electrode that awaits measuring more firm, level and more smooth clamping the in-process to guarantee the degree of accuracy and the stability of location.

Drawings

FIG. 1 is a schematic structural diagram of a cell membrane electrode testing device according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of an upper pressure plate in the cell membrane electrode testing device according to the present invention.

In the figure:

1. an upper clamp; 2. a lower clamp; 3. a positioning mechanism; 4. a second locking assembly; 5. a spare polar plate; 6. a notch;

11. an upper pressure plate; 12. an upper insulating spacer; 13. an upper current collecting plate; 14. an upper polar plate;

111. a first bolt hole; 112. a second bolt hole; 113. a third bolt hole; 114. a fourth bolt hole; 115. a fifth bolt hole; 116. a sixth bolt hole; 117. a seventh bolt hole; 118. an eighth bolt hole;

21. a lower pressing plate; 22. a lower insulating spacer; 23. a lower current collecting plate; 24. a lower polar plate;

241. a cooling water passage; 242. a seal ring; 243. a gas flow channel; 2431. an airway interface; 244. a thermocouple socket;

31. a base plate; 32. a column; 321. a boss;

41. a screw; 42. a nut; 43. and (7) a gasket.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment provides a cell membrane electrode testing device which is used for testing a fuel cell, in particular testing and fixing a cell membrane electrode. As shown in fig. 1, the cell membrane electrode test device includes: go up anchor clamps 1, lower anchor clamps 2, positioning mechanism 3, first locking Assembly, second locking Assembly 4 and reserve polar plate 5, go up anchor clamps 1 and be located the top of lower anchor clamps 2, reserve polar plate 5 is located the below of lower anchor clamps 2, and reserve polar plate 5 is used for the reserve and the replacement of last anchor clamps 1 and lower anchor clamps 2, meets under the circumstances that the proruption situation polar plate damaged in the experiment, can in time replace and accomplish the experiment smoothly.

The length and width of the upper clamp 1, the lower clamp 2 and the spare pole plate 5 are the same, and the edges of the three are aligned and arranged oppositely. The first locking assembly is configured to fix the upper clamp 1 and the lower clamp 2 along a first direction so as to ensure the stability of the cell membrane electrode to be tested in the first direction. The positioning mechanism 3 is respectively abutted against two sides of the upper clamp 1 and two sides of the lower clamp 2, the second locking component 4 is positioned below the lower clamp 2 and above the standby polar plate 5, and the second locking component 4 is respectively penetrated through the positioning mechanism 3 along the second direction so as to ensure the stability of the membrane electrode of the battery to be tested in the second direction. The first direction and the second direction are perpendicular to each other, the first direction is a vertical direction, namely a Z direction, the second direction is a horizontal direction, the second direction is a resultant force direction of an X direction and a Y direction, and the X direction, the Y direction and the Z direction are perpendicular to each other in pairs.

According to the cell membrane electrode testing device provided by the embodiment, the upper clamp 1 and the lower clamp 2 are folded to enable the cell membrane electrode to be tested to be clamped in the upper clamp, and the first locking assembly and the first positioning mechanism 3 are arranged, so that the upper clamp 1 and the lower clamp 2 are fixed along the first direction by the first locking assembly after the positioning mechanism 3 abuts against two sides of the upper clamp 1 and two sides of the lower clamp 2 respectively, and the limiting and fixing of the cell membrane electrode to be tested in the first direction are realized. Meanwhile, the second locking component 4 is arranged to penetrate through the positioning mechanism 3 along the second direction, and under the combined action of the positioning mechanism 3 and the second locking component 4, the limiting and fixing of the battery membrane electrode to be detected in the second direction are achieved. Because first direction and second direction mutually perpendicular set up, compare with prior art, realize the fixed of two degree of freedom directions in space, at the locking in-process of first locking Assembly and second locking Assembly 4, go up anchor clamps 1 and lower anchor clamps 2 can not take place small dislocation, make the battery membrane electrode that awaits measuring more firm, level and more at the clamp dress in-process to guarantee the degree of accuracy and the stability of location.

Further, as shown in fig. 1, the positioning mechanism 3 includes two positioning assemblies disposed opposite to each other, and the two positioning assemblies are disposed at diagonal positions of the upper clamp 1, respectively. Because last anchor clamps 1 and lower anchor clamps 2 are the cuboid structure, adopt this kind of mode, utilize a positioning mechanism 3, can be simultaneously to last anchor clamps 1 and lower anchor clamps 2X to and Y to spacing and fixed, simple structure, convenient to use has reduced manufacturing cost.

Specifically, every locating component all includes bottom plate 31 and the stand 32 that mutually perpendicular set up, and bottom plate 31 has played the effect of monolithic support, is provided with stand 32 perpendicularly on bottom plate 31, and stand 32 is preferably the right angle at the apex angle that contacts with last anchor clamps 1 to stand 32 can butt respectively in last anchor clamps 1 and lower anchor clamps 2, and stand 32 has played the effect of fastening last anchor clamps 1 and lower anchor clamps 2. Optionally, in order to realize the bearing and support of the lower clamp 2, a boss 321 is protruded on the inner side of the upright post 32, and the boss 321 is used for bearing the lower clamp 2, so that two diagonal positions of the lower clamp 2 can be placed on the boss 321.

Further, as shown in fig. 1, the upper fixture 1 includes an upper pressing plate 11, an upper insulating spacer 12, an upper current collecting plate 13, and an upper electrode plate 14, which are sequentially stacked from top to bottom, and the upper pressing plate 11, the upper insulating spacer 12, the upper current collecting plate 13, and the upper electrode plate 14 are all similar to a rectangular parallelepiped structure and have the same length and width dimensions. The upper pressure plate 11 is made of high-strength metal plates made of aluminum alloy materials and the like, the thickness of the upper pressure plate 11 is about 10mm, the upper pressure plate 11 provides vertical downward pressure for a battery membrane electrode to be tested, the upper insulation gasket 12 prevents the occurrence of electric conduction, the effect of insulation between the battery membrane electrode to be tested and the upper pressure plate 11 is achieved, the upper polar plate 14 is abutted to one side of the battery membrane electrode to be tested, and the upper polar plate 14 is used for providing an effective test environment for the battery membrane electrode to be tested.

The diagonal position of each part of the upper clamp 1 is provided with a notch 6 with the same size, the notch 6 is preferably a right-angle notch 6, the size of the right-angle notch 6 is matched with the right-angle vertex of the upright column 32, so that the notch 6 can slide relative to the upright column 32, the position adjustment of the upper clamp 1 relative to the upright column 32 along the first direction is realized, under the action of the second locking component 4, the notch 6 abuts against the side wall of the upright column 32, and the clamping and the fixing of the upper clamp 1 along the second direction are realized by utilizing the two upright columns 32 which are parallel and oppositely arranged.

Further, the lower clamp 2 includes a lower pressing plate 21, a lower insulating spacer 22, a lower current collecting plate 23 and a lower pole plate 24, which are sequentially stacked from bottom to bottom. The lower pressing plate 21 is made of high-strength metal plates made of aluminum alloy materials and the like, the thickness of the lower pressing plate 21 is about 10mm, the lower pressing plate 21 provides vertical upward supporting force for a battery membrane electrode to be tested, the lower insulating gasket 22 prevents the occurrence of electric conduction, the effect of insulation between the battery membrane electrode to be tested and the lower pressing plate 21 is achieved, the lower pole plate 24 abuts against the other side of the battery membrane electrode to be tested, and the lower pole plate 24 is used for providing an effective testing environment for the battery membrane electrode to be tested.

The lower pressing plate 21, the lower insulating spacer 22, the lower current collecting plate 23 and the lower pole plate 24 are similar to rectangular parallelepiped structures and have the same size. The notches 6 with the same size are arranged at the diagonal positions of each part of the lower clamp 2, the notches 6 are preferably right-angle notches 6, the size of the right-angle notches 6 is matched with the right-angle vertex of the upright post 32, so that the notches 6 can slide relative to the upright post 32, the position adjustment of the lower clamp 2 relative to the upright post 32 along the first direction is realized, under the action of the second locking component 4, the notches 6 abut against the side wall of the upright post 32, and the clamping and the fixing of the lower clamp 2 along the second direction are realized by utilizing the two upright posts 32 which are parallel and oppositely arranged.

Because a great deal of heat is generated in the testing process of the membrane electrode of the battery to be tested, if the heat is not discharged in time, the performance of the membrane electrode of the battery to be tested is influenced. In order to solve the problem, as shown in fig. 2, a cooling water channel 241 is disposed in the lower plate 24, the cooling water channel 241 is a cylindrical channel, a water inlet and a water outlet are disposed at two ends of the cooling water channel 241, the water inlet of the cooling water channel 241 is communicated with an external cooling water pipe, the cooling water pipe is used for providing and circulating cooling water or cooling liquid, and the water outlet of the cooling water channel 241 is used for discharging the cooling water or cooling liquid to take away heat. Alternatively, the arrangement shape of the cooling water passage 241 may be a linear structure. A spiral structure, a zigzag structure, a serpentine structure, or the like is preferable, and the purpose of adopting these structures is to increase the contact area between the cooling water channel 241 and the lower plate 24, thereby ensuring the cooling heat exchange effect.

Because the fuel cell outputs the gas force generated by combusting the hydrogen and the oxygen as power, in order to realize the performance test of the cell membrane electrode to be tested, the gas flow channels 243 are arranged on the side of the lower polar plate 24 facing the cell membrane electrode to be tested, and the hydrogen or the air is introduced from the gas channel interface 2431 of the gas flow channels 243 to provide original energy for the performance test of the cell membrane electrode to be tested. Alternatively, the arrangement shape of the gas flow passages 243 may be a linear structure. A spiral structure, a zigzag structure, a serpentine structure, or the like is preferable, and the purpose of using these structures is to increase the contact area between the gas flow channel 243 and the lower electrode plate 24, thereby ensuring the flow rate of the gas introduced into the gas flow channel 243.

It can be understood that the distance between the cooling water channel 241 and the lowest point of the groove of the gas flow channel 243 is h, and h is more than or equal to 2mm and less than or equal to 5mm, and the purpose of adopting this way is that if h is less than 2mm, the distance between the cooling water channel 241 and the gas flow channel 243 is too small, resulting in a thinner wall thickness and failing to meet the strength requirement; if h is more than 5mm, the distance between the cooling water passage 241 and the gas flow passage 243 is excessively large, and the cooling effect is not good. Therefore, by setting h to be more than or equal to 2mm and less than or equal to 5mm, the best cooling and radiating effect can be ensured while the strength is met. It should be noted that, the cooling water channel 241 and the gas flow channel 243 have different functions, the cooling water channel 241 is disposed inside the lower plate 24 for heat dissipation, and the gas flow channel 243 is disposed on the surface of the lower plate 24 for providing energy to the battery membrane electrode to be tested, and the two are disposed at different positions without interference.

Further, as shown in fig. 1-2, in order to ensure monitoring of the temperature in the lower plate 24, a thermocouple socket 244 is further formed on one side of the lower plate 24, a temperature sensor can be inserted into the thermocouple socket 244, the temperature sensor is used for detecting the temperature inside the lower plate 24, and after receiving a temperature signal sent by the temperature sensor, the controller can control the flow rate of the cooling liquid or the cooling water in the cooling water channel 241.

Further, in order to ensure the sealing effect between the membrane electrode of the battery to be tested and the lower electrode plate 24, as shown in fig. 2, a sealing ring 242 is disposed on the side of the lower electrode plate 24 facing the upper electrode plate 14, and the sealing ring 242 is disposed around the gas flow channel 243. When the membrane electrode of the battery to be tested is tested, the two sides of the sealing ring 242 respectively press against the membrane electrode of the battery to be tested and the lower polar plate 24, so that the sealing performance between the membrane electrode of the battery to be tested and the lower polar plate 24 is ensured, and the testing effect is good.

It is expected that the upper plate 14 and the lower plate 24 have similar structures, except that the upper plate 14 and the lower plate 24 are symmetrically disposed on two sides of the membrane electrode assembly of the battery to be tested, so that the gas flow channel 243 of the upper plate 14 faces one side of the lower plate 24, and one of the gas flow channels 243 of the upper plate 14 and the other of the gas flow channels 243 of the lower plate 24 is used for introducing hydrogen, and the other of the gas flow channels 243 is used for introducing air, so that the type of gas introduced into the gas flow channels 243 is not limited, as long as different gases are introduced into the two gas flow channels.

In order to fix and mount the upper clamp 1 and the lower clamp 2 in the second direction, as shown in fig. 1, the second locking assembly 4 includes a screw rod 41, a nut 42 and a washer 43, the screw rod 41 is in a long screw rod structure, the length of the screw rod 41 is at least greater than the length of a diagonal line of the lower clamp 2, and the axial direction of the screw rod 41 coincides with one of the diagonal lines of the upper clamp 1 and the lower clamp 2. Threaded holes are formed in the two upright columns 32 of the positioning mechanism 3, the screw rods 41 penetrate through the two threaded holes respectively, nuts 42 are sleeved at the two ends of the screw rods 41 respectively, the nuts 42 abut against the upright columns 32, and locking and fixing are achieved. Optionally, a spacer 43 is provided between the post 32 and the nut 42 to reduce damage to the post 32 during tightening of the nut 42. It can be understood that the threaded holes and the bosses 321 on the upright post 32 are arranged at different heights, and the heights do not interfere with each other.

In order to realize the fixing and the installation of the upper clamp 1 and the lower clamp 2 in the first direction, as shown in fig. 1 and 3, the first locking component comprises eight bolts, because the lengths and the widths of the upper clamp 1, the lower clamp 2 and the spare electrode are the same, two bolt holes are symmetrically distributed on each diagonal of the same rectangular plane, and the eight bolts are respectively penetrated through the bolt holes and penetrate through the upper clamp 1, the lower clamp 2 and each part in the spare electrode, so that the fixing effect is good, and the connecting accuracy and the connecting stability are ensured.

Since the number of bolts and bolt holes is large, the sequential installation in a certain order can further reduce positional deviation during the assembly process, and as shown in fig. 3, for this purpose, the upper pressure plate 11 is divided into two symmetrical first and second planes along the axial direction of the screw rod 41, and the first and second planes are centrosymmetric with respect to the center of the upper pressure plate 11. The bolt holes close to the axial direction of the screw 41 in the first plane are a first bolt hole 111 and a second bolt hole 112, respectively, and symmetrically disposed along another diagonal line in the first plane are a third bolt hole 113 and a fourth bolt hole 114, and the third bolt hole 113 is disposed close to the first bolt hole 111 and the fourth bolt hole 114 is disposed close to the second bolt hole 112. The first plane is rotated 180 ° counterclockwise along the center of the upper platen 11, resulting in a fifth bolt hole 115, a sixth bolt hole 116, a seventh bolt hole 117, and an eighth bolt hole 118 that are in turn centrosymmetric to the first bolt hole 111, the second bolt hole 112, the third bolt hole 113, and the fourth bolt hole 114.

During installation, four bolts near the two upright posts 32 are pre-tightened, and then the other four bolts are pre-tightened. Specifically, the first mounting order is the first bolt hole 111 and the fifth bolt hole 115, the second mounting order is the second bolt hole 112 and the sixth bolt hole 116, the third mounting order is the third bolt hole 113 and the seventh bolt hole 117, and the fourth mounting order is the fourth bolt hole 114 and the eighth bolt hole 118. The mode of diagonal positioning and central symmetry is adopted to realize multi-wheel fastening, so that the position deviation in the installation process can be reduced to a great extent until the test gap requirement of the membrane electrode to be tested is met, and the designed compression amount of the membrane electrode to be tested is finished.

It should be noted that, in each of the parts of the upper jig 1 and the lower jig 2, there are a first bolt hole 111, a second bolt hole 112, a third bolt hole 113, a fourth bolt hole 114, a fifth bolt hole 115, a sixth bolt hole 116, a seventh bolt hole 117, and an eighth bolt hole 118, through which eight bolts respectively penetrate to fix the upper jig 1 and the lower jig 2 in the first direction.

The assembly process of the cell membrane electrode testing device provided by the embodiment is as follows:

1. the nut 42 is rotated to adjust the distance between the two upright columns 32, the gaps 6 of the upper clamp 1 and the lower clamp 2 are attached to the right-angle sides of the two upright columns 32 and slide along the right-angle sides, the lower pressing plate 21 is firstly placed, the lower pressing plate 21 is placed on the boss 321, and then the lower insulating gasket 22, the lower current collecting plate 23, the lower polar plate 24, the membrane electrode assembly to be tested, the upper polar plate 14, the upper current collecting plate 13, the upper insulating gasket 12 and the upper pressing plate 11 are sequentially placed on the lower pressing plate 21.

2. And (3) screwing the nuts 42 to enable the two upright columns 32 to be properly clamped, respectively inserting eight bolts into the first bolt hole 111, the second bolt hole 112, the third bolt hole 113, the fourth bolt hole 114, the fifth bolt hole 115, the sixth bolt hole 116, the seventh bolt hole 117 and the eighth bolt hole 118, pre-tightening four bolts near the two upright columns 32, pre-tightening the other four bolts, and then performing multi-round fastening according to the sequence until the test gap requirement of the membrane electrode to be tested is met, so as to complete the designed compression amount of the membrane electrode to be tested.

3. The nut 42 is unscrewed, the distance between the two upright posts 32 is adjusted, and the positioning mechanism 3 and the spare pole plate 5 are removed.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are based on the orientations and positional relationships shown in the drawings and are used for convenience in description and simplicity in operation, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cell membrane electrode test device, comprising:

the device comprises an upper clamp (1) and a lower clamp (2), wherein the upper clamp (1) is positioned above the lower clamp (2) and is arranged opposite to the lower clamp, and a membrane electrode of a battery to be tested is accommodated between the upper clamp (1) and the lower clamp (2);

the positioning mechanisms (3) are respectively abutted against two sides of the upper clamp (1) and two sides of the lower clamp (2);

the first locking assembly comprises a plurality of bolts and is configured to fix the upper clamp (1) and the lower clamp (2) along a first direction so as to meet the requirement of a testing gap of the cell membrane electrode to be tested and complete the designed compression amount of the cell membrane electrode to be tested;

the second locking assemblies (4) are positioned below the lower clamp (2), the second locking assemblies (4) are respectively arranged in the positioning mechanism (3) in a penetrating manner along a second direction, and the first direction and the second direction are perpendicular to each other; the positioning mechanism (3) comprises two positioning components which are oppositely arranged, the two positioning components are respectively arranged at the diagonal positions of the upper clamp (1), gaps (6) are respectively arranged at the diagonal positions of the upper clamp (1) and the lower clamp (2), and the gaps (6) are abutted against the side wall of the upright post (32) and can slide relative to the upright post;

the second locking component (4) comprises a screw rod (41) and a nut (42), the screw rod (41) is arranged in the positioning mechanism (3) in a penetrating mode, and the nut (42) is sleeved on the screw rod (41) and abuts against the positioning mechanism (3);

each positioning assembly comprises a bottom plate (31) and an upright post (32) which are arranged perpendicular to each other, and the upright post (32) can abut against the upper clamp (1) and the lower clamp (2) respectively;

and a boss (321) is convexly arranged on the inner side of the upright post (32), the boss (321) is used for bearing the lower clamp (2), and the boss (321) is higher than the second locking component (4).

2. The battery membrane electrode testing device according to claim 1, wherein the upper clamp (1) comprises an upper pressure plate (11), an upper insulating gasket (12), an upper current collecting plate (13) and an upper polar plate (14) which are sequentially stacked from top to bottom, and the upper polar plate (14) abuts against one side of the battery membrane electrode to be tested.

3. The battery membrane electrode testing device according to claim 2, wherein the lower clamp (2) comprises a lower pressure plate (21), a lower insulating gasket (22), a lower current collecting plate (23) and a lower polar plate (24) which are sequentially stacked from bottom to top, and the lower polar plate (24) abuts against the other side of the battery membrane electrode to be tested.

4. The battery membrane electrode test device according to claim 3, wherein a cooling water passage (241) is provided in each of the upper plate (14) and the lower plate (24), and a seal ring (242) is provided on a side where the upper plate (14) and the lower plate (24) are close to each other.

5. The membrane electrode testing device for batteries according to claim 3, characterized in that gas flow channels (243) are arranged on both the upper plate (14) and the lower plate (24) on the side facing the membrane electrode of the battery to be tested, wherein one gas flow channel (243) is used for introducing hydrogen and the other gas flow channel (243) is used for introducing air.